Materials Required

* Cotton * Sugar * Weighing balance * 2 same size paper bags.

Method

  • Put cotton on one side and sugar on other side of the weighing balance until they weigh equal; the 2 sides of the balance are to be at the same height.
  • Take the 2 paper bags and add the weighed cotton in 1 bag and weighed sugar in the other one. 
  • Observe how much of both the bags are full.      

What is Learnt

* Substances of the same weight need not have same volume. * Lighter substances have more volume, while heavier substances have less volume.

Conclusion

* The cotton requires more space and the bag with cotton is full and may requires 1 more bag to fill it. * The sugar easily comes into the paper bag.